Infura Development Tutorials, Guides & Insights

• Data Analytics: Use Etherscan if you need to fetch historical data, such as transaction histories, token balances, or account balances.
• Blockchain Explorers: Ideal for building tools similar to Etherscan itself, where you query and display blockchain data to users.
• Read-Only Data: You can’t send transactions, but you can retrieve information about any Ethereum address, smart contract, or token transfer.

• Decentralized Applications (dApps): If you’re building an application that needs to interact with Ethereum in real-time, such as sending transactions or calling smart contract functions.
• Wallets: If you are developing a wallet application that needs to sign and broadcast transactions.
• Smart Contract Deployment: Use Infura to deploy or interact with smart contracts on the Ethereum blockchain.

npm install ethers

Let’s start by sending Ether from one account to another using Ethers.js and Infura.

const ethers = require('ethers');

// Replace this with your Ethereum wallet's private key or mnemonic phrase
const privateKey = 'YOUR_PRIVATE_KEY_OR_MNEMONIC';

// Use a public Ethereum node URL (this is a public node for demonstration purposes)
const publicProvider = new ethers.JsonRpcProvider('https://mainnet.publicnode.com');

// Create a wallet instance using your private key and connect it to the public node provider
const wallet = new ethers.Wallet(privateKey, publicProvider);

// Function to get the balance of the wallet
async function getWalletBalance() {
    // Get the wallet's balance in wei
    const balanceInWei = await wallet.getBalance();

    // Convert the balance from wei to Ether for readability
    const balanceInEther = ethers.utils.formatEther(balanceInWei);

    // Log the results
    console.log(`Wallet Address: ${wallet.address}`);
    console.log(`Wallet Balance: ${balanceInEther} ETH`);
}

// Execute the function
getWalletBalance();

• Replace 'YOUR_PRIVATE_KEY_OR_MNEMONIC' with your actual Ethereum wallet's private key or mnemonic phrase.
• For the Infura method, replace 'YOUR_INFURA_PROJECT_ID' with the Infura Project ID you received when you created your Infura account.

• Description: A development framework for Ethereum that provides a suite of tools for writing, testing, and deploying smart contracts.
• Key Features:
• Built-in smart contract compilation, linking, deployment, and binary management.
• Scriptable deployment & migrations framework.
• Network management for deploying to different networks.
• Interactive console for direct contract interaction.
• Testing framework using Mocha and Chai.
• Website: Truffle

• Description: A flexible and extensible development environment for Ethereum, designed to manage and automate tasks like contract compilation and deployment.
• Key Features:
• Local Ethereum network for testing (Hardhat Network).
• Easy integration with popular tools like Ethers.js and Waffle.
• Plugins for Solidity coverage, gas reporting, and more.
• Error messages and stack traces specific to Solidity.
• Highly customizable and scriptable.
• Website: Hardhat